National Weather Service United States Department of Commerce

Widespread Excessive Heat and Humidity in Midwest to Spread to East Coast

High pressure building across the Central and Eastern U.S. will produce a dangerous combination of heat and humidity. Heat indices from unusually high dewpoints and well above normal temperatures may reach 110 to 115 degrees. In addition, near record warm low temperatures will limit recovery from hot daytime temperatures. Read More >

Upper Air Maps

 

The upper air maps are updated twice a day. They are updated once in the morning (typically between 7am and 9am central time) - these are called the 12z maps. They are also updated once in the evening (typically between 7pm and 9pm central time) - these are called the 00z maps.

Upper Air Maps From Storm Prediction Center
Time 925 mb 850 mb 700 mb 500 mb 300 mb 250 mb
Morning Maps
Evening Maps

Additional Links

Upper Air Maps - current, unanalyzed, and archived maps from SPC
Upper Air Data - upper air maps, soundings, and wind profiler information from NCAR
Soundings - upper air soundings from across the United States from SPC
SPC Mesoanalysis - real-time objectively analyzed maps from SPC, with a focus on severe weather parameters
Composite Map - interactive map where you can overlay several different weather maps